Sash operating, locking, and balancing mechanism.



PATE'NTED NOV. 5,1907.

J. D. HESS.

SASH OPERATING, LOCKING, AND BALANCING MECHANISM.

APPLIOATION FILED JUNE 1, 190].

2 SHEETS-SHEET 1.

J mHmHH I 11 E r. J II i cm, wAsmnm-ou. 0 c1 PATBNTED Nov. 5, 1907. J. D. HESS. SASH OPERATING, LOOKING, AND BALANCING MECHANISM.

APPLIUATION FILED JUNE 1. 1907.

2 SHEETS-SHEET 2.

Wi tn asses our JOHN D. HESS, F NEAR BALTIMORE, MARYLAND.

SASH OPERATING, LOCKING, AND BALANCING MECHANISM.

Specification of Letters Patent.

Patented Nov. 5, 1907.

Application filed June 1! 1907. Serial No. 376,879.

To all whom it may concern:

Be it known that I, JOHN D. Hess, a citizen of the United States of America, residing near Baltimore city, in the county of Baltimore, in the State of Maryland, have invented new and useful Improvements in Sash Operating, Locking, and Balancing Mechanism, of which the following is a specification.

This invention is an improved sash operating, lock ing and balancing mechanism, comprising in combination with lower and upper sashes provided respectively with rack bars, an operating shaft mounted for revolution and for endwise movement and having a master gear, stop devices carried by such shaft, a shaft, a counter gear on such shaft for engagement by such master gear and one of such stop devices, and a pinion on such counter shaft for engagement with the rack of the upper sash, as hereinafter more fully described and claimed.

The object of my invention is to provide a cheap, simple, compact and serviceable mechanism which may be employed for raising or lowering either of the window sashes at will and for also locking either or both of such window sashes.

In the accompanying drawings,Figure 1 is an elevation partly in section of a window frame and sashes provided with sash-operating, locking and balancing mechanism embodying my invention. Fig. 2 is a detail elevation of the same, the frame of the window and the frame or casing of the sash operating, locking and balancing being partly in section, such mechanism beand the stop devices which are movable with and operated by such master gear. Fig. 7 is a detail perspective view showing the master gear, the stop de vices and the collar which secures such stop devices on the master gear.

In accordance with my invention I provide the lower sash 1 with a vertically disposed rack bar 2 in one side and provide the upper sash 3 with a similar rack bar 4. I also provide a casing 5, which is here shown as rectangular, but which may be of any suitable shape. The said casing is in practice mortised in one side of the window frame 6 and is provided at one side with a cover plate 7 which projects beyond the sides of such casing and forms a flange 8 which is countersunk in the window frame and is secured thereto, as by means of screws 9, to secure such casing firmly to the window frame. The said casing is provided with a vertically disposed bar 10 which is appropriately spaced with reference to its vertical side walls 11 and 12. In the lower side 13 of such casing is a longitudinal slot 14.

An operating shaft 15 is journaled in suitable bearings in the walls 11 and 12 and in the bar 10 of the casing 5 and is mounted both for revolution and for endwise or longitudinal movement. To the outer end of said operating shaft is attached an operating crank handle or other suitable device 16. A master gear 17 is secured upon such operating shaft for revolution and longitudinal movement therewith. A screw 18 is here shown to thus secure such gear. Such gear is provided with a peripherally toothed portion 19 and is also provided on opposite sides of such toothed portion with cylindrical shoulder portions 20 and 21. A stop or locking device 22 is here shown as having a collar or eye portion 23 to receive the cylindrical shoulder 20 of the master gear and permit such gear to turn therein. From the upper side of such stop or locking device projects a locking stud 24 adapted to engage the rack. An arm 25 extends from the lower side of such device and operates in the slot 14, the latter, while serving to enable such stop device to move longitudinally with the master gear, serving also to prevent such stop device from turning therewith. A collar 26 is secured on the cylindrical shoulder 20, on the outer side of the stop device 22, as by a screw 27. A collar 28 bears against the inner side of such stop device. A similar stop or locking device 29 has a horizontally extended stud 30 on one side of its eye or collar 31 which is free to turn on the cylindrical shoulder 21 and has its arm 32 extending into the guide slot 14. Such stop device is mounted on the cylindrical shoulder 21 of the master gear, collars 33 and 34 being provided to bear against the inner and outer sides of its collar or eye 31, and the said collar 34 is secured on the shoulder 21 of the master gear, as by means of a set screw 35.

A counter shaft 36 has its bearings in the end walls and bar 10 of the casing 5 and is provided with a spur pinion 37 for engagement by the master gear or by the stop 24. A pinion 38 is also secured to such counter shaft and is in constant engagement with the rack 4 of the upper sash. It will be observed by reference to the drawings that the width of the spurred portion of the master gear exceeds that of the spurred portion of the pinion 37, so that such master gear may be moved lengthwise to a certain extent with the operating shaft while being engaged with the pinion 37, to engage the stop device 29 to lock the rack 2 of the lower sash or disengage said step therefrom.

The operation of the invention is as follows. By moving the operating shaft 15 outwardly to cause the stop device 29 to disengage the rack of the lower sash, the master gear to engage such rack and the stop device 22 to engage the pinion 37, the last mentioned stop-device, by locking the pinion 37, will prevent the counter shaft from rotating and hence the pinion on such counter shaft and the rack on the upper sash will coact to lock the upper sash against movement, but by turning the operating shaft to cause the master gear to revolve, such master gear by coaction with the rack of the lower sash will serve to raise or lower the latter, according to the direction in which such operating shaft is turned. By moving the operating shaft inwardly to the required extent to disengage the stop device 22 from the pinion 37 and engage the master gear with such pinion 37, but without engaging the stop device 29 with the rack of the lower sash, both of the sashes may be simultaneously operated by turning such operating shaft, the master gear thereon by coaction with the rack bar of the lower sash serving to operate the latter and by meshing with the pinion 37 serving to revolve the counter shaft to cause the pinion to coact with the rack of the upper sash to operate the latter. By moving the operating shaft inwardly to a greater extent, to cause the stop device 29 to engage the rack of the lower sash, but without disengaging such master gear from the pinion 37, such stop device 29 will coact with the rack of the lower sash to lock the latter against movement, but the pinion 37 and master gear being in mesh, such gears will be revolved when the operating shaft is turned, and hence the pinion and rack of the upper sash will coact to operate. the latter. In order to lock both of the sashes against operation the operating shaft must be moved outwardly to the required extent to engage the stop device 29 with the rack of the lower sash without disengaging the master gear from the pinion 37. Since the said stop device prevents the lower sash from moving, the rack of such lower sash being engaged by the master gear will prevent the operating shaft from being turned, and hence the upper sash also will be locked.

To facilitate the raising and lowering of the sashes I, in practice, provide each of them, on the side opposite that provided with the rack bar, with an anti-friction roller 39 mounted in a casing 40 countersunk in such sash, as shown in Fig. 1, such anti-friction rollers hear.- ing against the opposing side of the window frame.

Having thus described the invention, what is claimed as new, is:

1. Sash operating, locking and balancing mechanism comprising in combination with an upper and lowersash, each having a rack at one side, a counter shaft having a pinion engaging the rack of the upper sash and further provided with a second pinion; an operating shaft mounted for rotation and for longitudinal movement and having a master gear for engagement either with the second pinion or the rack of the lower sash, and stop devices actuated by such operating shaft, one for engagement with and disengagement from such second pinion and the other for engagement with and disengagement from the rack of the lower sash.

2. Sash operating, locking and balancing mechanism comprising in combination with an upper and lower sash,

each having a rack at one side, a counter shaft having a.

pinion engaging the rack of the upper sash and further provided with a second pinion; an operating shaft mounted for rotation and for longitudinal movement and having a master gear for engagement either with the second pinion or the rack of the lower sash, and stop devices actuated by such operating shaft, one for engagement with and disengagement from such second pinion and the other for engagement with and disengagement from the rack of the lower sash, and means to prevent such stop devices from turning with such counter shaft.

3. Sash operating, locking and balancing mechanism comprising in combination with racks with which the respective upper and lower sashes are provided, a counter shat't having a pinion engaging the rack of the upper sash and further provided with a second pinion, an operating shaft mounted for rotation and also for longitudinal movement, :1 master gear on such operating shaft for engagement with either or both the second pinion and the rack of the lower sash, stop devices, one for engagement with and disengagement from the second pinion and the other for engagement with and disengagement from the rack of the lower-sash, such stop devices being movable longitudinally with such mastergear, and means to prevent such stop devices from turning.

In testimony whereof, I affix my signature in presence of two witnesses.

JOHN D. HESS.

Witnesses J. W. GARNER, J 01m L. FLETCHER. 

